Place the chicken breast between two sheets of parchment paper and pound to an even half-inch thickness to ensure even cooking.
In a shallow bowl, whisk the egg until smooth. In a separate shallow bowl, combine the almond flour, grated parmesan, oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, allowing any excess to drip off, then dredge it through the parmesan mixture, pressing firmly to create a solid crust.
Heat the olive oil in a large non-stick skillet over medium heat. Once hot, add the chicken and sear for 5 to 6 minutes per side until the crust is golden and the internal temperature reaches 165 degrees Fahrenheit.
While the chicken is cooking, warm the marinara sauce in a small saucepan over low heat.
Remove the chicken from the skillet and set aside. In the same skillet, add the zucchini noodles and sauté for 2 minutes until just tender but not mushy.
To serve, place the zucchini noodles on a plate, top with the crispy chicken breast, and ladle the warm marinara sauce over the center. Garnish with fresh basil.